Web API and CSS property feature detections to assist the @mdn/browser-compat-data project
Internet Explorer 6+
- Detection for features under prefixes are not yet supported
- Detection for features under alternative names are not yet supported
- In older browsers, some attributes aren't initialized in the API prototypes, resulting in false negatives (see #406)
- Some APIs are accessed through other APIs and aren't exposed on their own; custom tests have not been written for them all
If you find any errors in feature detection, please file an issue in the GitHub repository.